Gravels and Substrates

CaribSea, Freshwater, Instant Aquarium, Torpedo Beachdensity is equal to 1505.74 kg/m³ or 94 lb/ft³ with specific gravity of 1.50574 relative to pure water. Calculate how much of this gravel is required to attain a specific depth in a cylinder, quarter cylinder or in a rectangular shaped aquarium or pond

Materials and Substances

What is millimeter of water?

The millimeter of water (mmH2O) is defined as the pressure exerted at the base of a column of fluid exactly 1 millimeter (mm) high, and the fluid density is exactly 1.004514556 gram per cubic centimeter (g/cm³), at a physical location where the gravity acceleration is exactly 9.80665 m/sec²read more...»

What is linear density or linear mass density measurement?

The linear density (μ) of a one-dimensional object, also known as linear mass density, is defined as the mass of the object per unit of length.read more...»